I have customized the Popup css to have it in fixed position and horizontally aligned in the center of the screen. It displays correctly in Android device, but way of in iOS. Below is the css I have and the screenshot for iOS and Android. How can I fix the issue in iOS?

Similar to what @thesourav said, ionic popups should be centered by default, so I’m not sure why you are trying to position it yourself.

But to solve your issue, I would open the app on iOS and then open up the Safari web inspector for your app to inspect the popup HTML element. Here, you can try changing the CSS to see what attributes you are missing. I would start with adding in

I’d actually recommend using a modal if you have an input form, that should prevent the keyboard from covering it and I believe it is more consistent with UI guidelines. But that’s just the approach I would take.